A number of rumors have been circulating about developers already having teams devoted to working on laying the ground work for the successor to the Xbox 360. The latest whispers suggest that despite all of the rumors that they are not working on an Alan Wake 2, Remedy may instead be working on a new Alan Wake title for the next gen Xbox.
The rumors have been growing stronger over the past several weeks, suggesting that multiple studios are already working with new prototype Xbox hardware and making headway in getting engines and such moved over to the new platform. Still, no one seems to want to go on record to confirm this; which is no surprise.
Microsoft officially remains focused on the Xbox 360 and Kinect in the official here and now. Still, development for the future might be taking place; we have to think that it is likely given the extensive lead time necessary to build games for the next console.